//function for rollover
function newImage(arg) {
	if (document.images) {
		rslt = new Image();
		rslt.src = arg;
		return rslt;
	}
}

function changeImages() {
	if (document.images && (preloadFlag == true)) {
		for (var i=0; i<changeImages.arguments.length; i+=2) {
			document[changeImages.arguments[i]].src = changeImages.arguments[i+1];
		}
	}
}

var preloadFlag = false;
function preloadImages() {
	if (document.images) {
		meeting_over = newImage("/graphics/meetingbt-over.jpg");
		research_over = newImage("/graphics/researchbt-over.jpg");
		direct_over = newImage("/graphics/directbt-over.jpg");
		pub_over = newImage("/graphics/pubbt-over.jpg");
		gov_over = newImage("/graphics/govbt-over.jpg");
		educat_over = newImage("/graphics/educatbt-over.jpg");
		myhome_over = newImage("/graphics/myhomebt-over.jpg");
		abouticsc_over = newImage("/graphics/abouticscbt-over.jpg");
		membership_over = newImage("/graphics/membershipbt-over.jpg");
		preloadFlag = true;
	}
}